505642697 has 8 divisors (see below), whose sum is σ = 579168000. Its totient is φ = 432440064.

The previous prime is 505642673. The next prime is 505642729. The reversal of 505642697 is 796246505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505642697 - 2¹⁴ = 505626313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505642597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77297 + ... + 83582.

It is an arithmetic number, because the mean of its divisors is an integer number (72396000).

Almost surely, 2^505642697 is an apocalyptic number.

It is an amenable number.

505642697 is a deficient number, since it is larger than the sum of its proper divisors (73525303).

505642697 is a wasteful number, since it uses less digits than its factorization.

505642697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161335.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 505642697 is about 22486.5003279746. The cubic root of 505642697 is about 796.6751051745.

The spelling of 505642697 in words is "five hundred five million, six hundred forty-two thousand, six hundred ninety-seven".